您要查找的是不是：
- They are building a submarine cable tunnel. 他们正在建设一条海底电缆隧道。
- This destroyer can overrun any submarine. 这艘驱逐舰的速度比任何潜水艇都快。
- The vessel was ruined by a submarine. 那艘船是被潜水艇毁坏的。
- The ship was sunk by an atomic submarine. 这艘船是被一艘核潜艇击沉的。
- We used the money to set up an irrigation project. 我们把钱用在兴建灌溉工程上了。
- The submarine rose to the surface. 潜艇露出了水面。
- They are digging irrigation ditches. 他们在挖灌溉渠。
- The ship was stopped by a surfaced submarine. 那艘船被一浮出水面的潜水艇拦住了。
- Submarine cables were laid across the Atlantic. 铺设了横越大西洋的海底电缆。
- Can you git a fix on the submarine? 你能确定那潜艇的位置吗？
- The submarine submerged to avoid enemy ships. 该潜艇潜入水下以躲避敌舰。
- The frigate rammed the submarine. 护卫舰撞击了潜艇。
- Irrigation is needed to make crops grow in dry regions. 干旱地区需要灌溉才能使作物生长。
- A telegram sent by submarine cable. 海底电报通过海底电缆拍发的电报
- Irrigation is needed to make crops grow in dry area. 要使庄稼在乾旱地区生长就需灌溉。
- Irrigation is needed to make crops grow in dry areas. 要使庄稼在乾旱地区生长就需灌溉。
- submarine irrigation 水下灌注
- Water is channelled through a series of irrigation canals. 把水引入一系列灌溉渠中。
- At the first sign of danger the submarine will submerge. 一有危险迹象，潜艇就会潜入水中。
- The pressure inside the old submarine was almost unendurable. 老式潜艇内的压力几乎是难以忍受的。
